Hi everyone, I'm busy installing the debian perfect server with apache on a virtual machine. the host machine is a debian stretch (laptop), runing virtual box 5.2.18_Debian r123745 on top of which the guest machine (or virtual machine) has a debian stretch fresh net-install with not any additional component, Before going through the tutorial, the only change I did to the virtual machine was to install ssh services and redirect network card in order to acces the virtual machine from my host system terminal (and be able to copy paste freely) like explained here (sorry I know realise it's in french) Now everything is fine with the insalation process upto step 8, at the end, when I'm supposed to reload the services. Code: [email protected]:/# systemctl daemon-reload [email protected]:/# service mysql restart Warning: mysql.service changed on disk. Run 'systemctl daemon-reload' to reload units. [email protected]:/# I've read it wasn't an issue but I would like to know why and how ? and if is there anythin I can do ? Thank's by advance ! J.